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TABLE OF CONTENTS <br /> A <br /> ...............................I................................ ..................... ........................2 <br /> 1.0 INTRODUCTION....... <br /> 1.1 Project Background......................................... ................................................................. 2 <br /> 1.2 Report Organization.........11-1.............................................................. ...................................2 <br /> 2.0 SITE CONCEPTUAL MODEL........................ ......................................................................_........3 <br /> 2.1 Existing Groundwater Monitoring Wells................................... ....................... .....................3 <br /> 2.2 Groundwater Elevations and Gradient...............................................................i ..............3 <br /> 2.2.1 Groundwater Gradient.................................................................................. ................... <br /> 2.2.2 Depth to Groundwater....I............................ ........................................................................4 <br /> 2.3 Site Stratigraphy............. ..................................................................................I...................4 <br /> 2.4 Source Areas and 1,2-DCA Distribution.................................................................................4 <br /> 2.4.1 Source Areas..... ...............................................................................................................4 <br /> 2.4.2 Distribution of Site Groundwater Constituents of Concern................... ..............................5 <br /> 2.4.3 Trends in 1,2-DCA Concentrations.....................................................................................5 <br /> 3.0 DATA GAPS AND PROPOSED ADDITIONAL WELL LOCATIONS..............................................5 <br /> 4.0 SCOPE OF WORK........................................................................ ....__..................­­.............­6 <br /> 5.0 SOIL BORING AND WELL INSTALLATION..............................................................7.........*..........6 <br /> 5.1 Well Installation Pen-nit and Utility Clearance...............................................................................6 <br /> 5.3 Equipment Decontamination.........................................................................................................7 <br /> 5.4 Monitoring Well Installation........................................................................................................T <br /> 5.5 Groundwater Monitoring Well Development, Sampling,and Surveying .......................7 <br /> 9 9................... <br /> 6.0 SCHEDULING AND REPORTING.......................................................................... ..............8 <br /> 7.0 REFERENCES..............................................1-1..................................................................................8 <br /> LIST OF TABLES <br /> Table I Well Construction Details <br /> Table 2 Water Level Data <br /> Table 3 Historical Summary, Groundwater Analytical Data <br /> LIST OF FIGURES <br /> Figure I Site Vicinity Map <br /> Figure 2 Site Map with Cross Section Locations <br /> Figure 3 Groundwater Elevation Contour Map,March 28, 2007 <br /> Figure 4 Groundwater Elevation Hydrograph, DMW-I <br /> Figure 5 Hydrogeologic Cross Section A-A' <br /> Figure 6 Hydiogeologic Cross Section B-13' <br /> Figure 7 Site Map with PCE and 1,2-DCA Concentrations <br /> Figure 8 Plots of Concentration Versus Time for 1,2-DCA: DMW__2 and DMW-5 <br /> Figure 9 Plots of Concentration Versus Time for 1,2-DCA: DMW-6 and DMW-9 <br /> Figure 10 1,2-DCA Plume and Proposed Monitoring Well Locations <br />